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[DECNET]: Increase number of possible routing tables to 2^32

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Increase the number of possible routing tables to 2^32 by replacing the
fixed sized array of pointers by a hash table and replacing iterations
over all possible table IDs by hash table walking.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2006-08-10 23:11:47 -07:00 • committed by David S. Miller
parent 1b43af5480
commit abcab26830
4 changed files with 93 additions and 86 deletions
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49
net/decnet/dn_fib.c
View file

@ -532,39 +532,6 @@ int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
return -ENOBUFS;
}
int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb)
{
u32 t;
u32 s_t;
struct dn_fib_table *tb;
if (NLMSG_PAYLOAD(cb->nlh, 0) >= sizeof(struct rtmsg) &&
((struct rtmsg *)NLMSG_DATA(cb->nlh))->rtm_flags&RTM_F_CLONED)
return dn_cache_dump(skb, cb);
s_t = cb->args[0];
if (s_t == 0)
s_t = cb->args[0] = RT_MIN_TABLE;
for(t = s_t; t <= RT_TABLE_MAX; t++) {
if (t < s_t)
continue;
if (t > s_t)
memset(&cb->args[1], 0,
sizeof(cb->args) - sizeof(cb->args[0]));
tb = dn_fib_get_table(t, 0);
if (tb == NULL)
continue;
if (tb->dump(tb, skb, cb) < 0)
break;
}
cb->args[0] = t;
return skb->len;
}
static void fib_magic(int cmd, int type, __le16 dst, int dst_len, struct dn_ifaddr *ifa)
{
struct dn_fib_table *tb;
@ -762,22 +729,6 @@ int dn_fib_sync_up(struct net_device *dev)
return ret;
}
void dn_fib_flush(void)
{
int flushed = 0;
struct dn_fib_table *tb;
u32 id;
for(id = RT_TABLE_MAX; id > 0; id--) {
if ((tb = dn_fib_get_table(id, 0)) == NULL)
continue;
flushed += tb->flush(tb);
}
if (flushed)
dn_rt_cache_flush(-1);
}
static struct notifier_block dn_fib_dnaddr_notifier = {
.notifier_call = dn_fib_dnaddr_event,
};